Our planet contains a great deal of heat under its surface. Scientists have learned how to tap into this heat and use it as an alternative energy source. This book brings students inside Earth for an up-close look at how geothermal energy is created, harnessed, and used to power our world. Early elementary science curriculum is made highly-accessible and fun through full-color photographs and images. An emphasis on STEM topics addressed in the Next Generation Science Standards makes this the perfect resource for students looking to learn more about the science and engineering behind geothermal energy.